By Sam Laskaris Writer The Six Nations Rivermen had to settle for a split in their two most recent Ontario Series Lacrosse (OSL) contests. For starters, the Rivermen only had 13 runners available this past Friday. Despite valiant efforts from those that did show up, the local Senior B squad was edged 12-11 by the host Brooklin Merchants. That contest was held at the Luther Vipond Memorial Arena in Brooklin. Then, one night later, the Rivermen almost had a full bench, 17 runners and two goalies, one player under the maximum allotment of 20, as they defeated the same visiting Merchants 19-16. Ironically, the Merchants, who had a full roster on Friday, showed up with 13 runners for Saturday’s outing, staged at the Six Nations Sports and Cultural Memorial Centre….